Current Setting; Setting The Detection Delay Tiae - Toshiba Current Relay RC803A-HP1 Instruction Manual

T O S H I B A
6 . AdjustDents

6.1 Current setting

(1) When detected current is in a range of 0.5 - 5A:
After confirming that the current value under noraal load
condition is in a range of 0.5 - SA, set the current
adjusting knob to the desired detecting value.
Using an external CT (current transformer), properly suited
for the detected Current value, connect the secondary side of
t h e C T t o t h e input terminal o f t h e r e l a y . C a l c u l a t e t h e
secondary current CorresDonding to the detected current
value, based on the CT ratio.
Knob to this calculated value.

6.2 Setting the detection delay tiae

Setting time varies depending upon each individual aDDlication.
Adjust the detection delay tile according to the following:
TO avoid detection during start-up, set the delay tire to
(2) Transformer load
If the inrush current (inrush time varies deDending uDon
1 2 0 % o f t h i s i n r u s h tile. Genenrally,
adjusting knob is set at the minims
not be any nuisance tripping.
Then set the current adjusting
position. there should